Re: What is the better approach to implement Singleton pattern?
Venkat Sadasivam wrote:
Singleton is one of the frequently used and easily understandable
design pattern. Most of the tutorials and books give example of making
the constructor as private and exposing a static method which will
provide single instance. The common example they use is Runtime class
of JRE.
Is making constructor as private is the only way to implement
singleton pattern? Is that the best way to implement singleton
pattern?
Here is the complete article.
http://venkatsadasivam.wordpress.com/2008/03/27/what-is-the-better-approach-to-implement-singleton-pattern/
private constructor and private static instance and public static method
to get instance is the only way to implement the singleton pattern.
Other methods are not singleton as defined by GoF.
And you blog post is completely off - Math is not a singleton class.
A singleton class carry data that should exist in one copy.
Math is a bunch of static methods but no data.
In C# you can declare a class as static to indicate that it only
contains static.
OOP is good but occasionally problems are really procedural.
Arne
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